Machine for coiling metal.



c. H. LOUT RE L. MACHINE FOR COILIING METAL.

' APPLICATION EILED APR. 8' T914- I 1,137,412, Patented Apr. 27, 1915.

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62pm I Gl'tozncq c H. LOUTREL. MACHINE FOR COILING METAL.

APPLICATION FILED APR.'8| 1914. 1 ,13'7,412, Patented Apr. 27, 1915.

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C. H. LOUTREL. MACHINE FOR-COILING METAL.

Patented Apr. 27; 1915.

APPLICATION FILED APR- B. 1914.

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' Patented Apr. 27, 1915.

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gwvawtoz UNITED STATES PATENT OFFICE.

CYRUS H. LOUTREL, OF SOUTH ORANGE, NEW JERSEY, ASSIGNOR TO THE NATIONAL LOCK WASHER COMPANY, OF NEWARK,v NEW JERSEY, A CORPORATION OF NEW JERSEY.

To all whom it may concern Be it known that I, CYRUS H. LOUTREL, a citizen of the United States, residing at South Orange, Essex county, New Jersey, have invented certain new and useful Improvements in Machines for Coiling Metal; and I do declare the following to be a full, clear, and exact'description of the invention, such as will enable others skilled-in the art to which it appertains to make and use the same.

My present invention pertains to an improved machine for coiling metal, the construction and advantages -of which will be hereinafter set forth, reference being had to the annexed drawings, wherein:

Figure 1 is a horizontal sectional view of the machine, the stock or metal being shown as being coiled upon the mandrel and the primary or initial bending or coiling device as withdrawn; Fig. 2 a sectional'elevation on the line 2-2 of Fig. 1; Fig. 3 a front elevation with the primary bending or coiling device in operative position; Fig. 4 a top,

plan vie w, the primary coiling device being broken away and partly in section; Fig. 5 a vertical sectional view on the line 5-5 of Fig. 4; Fig. 6 a perspective view of the stationary die; Fig. 7 a detail sectional plan, showing the relation of the primary coiler to the stock, mandrel and the stationary die; Figs. 8, 9 and 10 detail sectional views, illustrating the operation of the primary coiler; Fig. 11 a perspective view of that end of the stock after it is primarily coiled; and Fig. 12 a sectional plan, on an enlarged scale over that of Fig. 1, illustrating the operation of the positively-driven roller dies or forming rolls.

The main object of the present invention is to provide a simple and readily adjustable machine, wherein stock of various sizes may be accurately coiled, and this with a minimum expenditure of power and wear upon the parts.

A. further object of the invention resides in the provision of means whereby the machine may be initially andquickly adjusted for stock of different sizes and coils having different diameters, associated with means whereby the pressure or forming rolls or dies may be retracted from or advanced to- Specification of Letters Patent.

MACHINE FOR COILING METAL.

Patented Apr. 27, 1915.

Application filed April 8, 1914. Serial No. 830,428.

ward the mandrel independently of any change of, position in the initial adjusting mechanism.

A-still further object resides in the provision of simple means whereby the stock may be initially positioned about the mandrel prior to the final adjustment and operation of the forming rolls.

' Another object of the invention is to provide means whereby the mandrel and its supporting member may be readily removed and another of different size substituted.

lVith these and other objects in view, a detailed description will be given, reference being made to the annexed drawings, wherein, 1 denotes the bed or base of the machine, upon the rear of which there is secured a. standard 2, in which is journaled a driving shaft 3 carrying a driving pinion 4, the outer end of the shaft being threaded for the reception of a chuck 5, adapted to re ceive and clamp a mandrel 6. A spider 7, secured to standard 2, forms an additional support for the shaft 3. A series of stub shafts 8, three in the present instance, are journal'ed in standard 2 and each has secured to it a gear 9, which gears intermesh with and are driven by gear 4.

The pressure forming dies or rolls, of which there are three, are designated by 10, and each is mounted upon a shaft 11, which at its rear end is connected through the medium of a gimbal joint 12 to the forward end of a two-part telescopic shaft 13, which in turn is connected by a gimbal joint 14 with the forward end of shaft 8. Shafts 1-1 and rolls 10 are designed to be adjusted simultaneously toward and from the mandrel in parallelism, and the supporting mechanism therefor is such that a wide range may be had by adjusting one device to secure the initial adjustment for different sized stock and different sized mandrels and coils, and a second device whereby the rolls may be adjusted from and toward the mandrel when a new piece of stock is to be positioned upon the mandrel. The rear member of the supporting frame for such adjusting mechanism comprises a ring-shaped member 15 secured to bed 1 by lugs or brackets 16, the lower portion of said frame extending downwardly through an opening 17 formed in the bed A similarly shaped member- 18 is secured to the bed or table by brackets 19,

adjacent the forward portion of the opening 17. Each of said members 15 and 18 is provided with a groove inits outer face, and serve to support, respectively, rotatable cam plates 20 and 21, plate 20 being held up tomember 15 by clips 22, while plate 21 is held in place by clips or blocks 23.

Each of the cam plates 20 and 21 is provided with three cam grooves or ways 24' turn being likewise connected to the boxes 31, 31in which the shafts 11 are mounted and turn. Said boxes 31, 31 and the blocks 27 27 are mounted in radially disposed guide-ways 32, 33, formed respectively in the spoke-"shaped members 34, 35 of the fixed frame members 15 and 18. Cam plates 20 and 21 are connected to each other by means of a cross bar 36 and posts 37, the bar carrying a handle 38 by means of which the plates may be adjusted in unison.

Located intermediate frame members 15 and 1S and rotatably supported upon the latterby clips 39, is a cam ring 40, formed of two parts secured together, as shown in Fig. 1, and provided or formed with three cam grooves 41, in each of which there is mounted a spoolshaped roller 42, the axlev of which, see Fig. 5, passes through the outer end of an arm 43. Said arm passes through an. opening formed in cross-bar 28 and at its inner end is pivotally connected v to the'overlapping ends of two links 44, 45,

the outer ends of which are likewise connected to the links 29 and 30 at their points of connection. A handle 46 is secured to the cam ring 40 by which the ring may be turned or adjusted. Through the manipulation of handle 38, the initial adjustment of the rollslO will be effected, that is to say, where a large mandrel isemploved, or large stock used, the shifting of the cam plates 20, 21 will move the fulcrum blocks 27 (in I or out) and consequently shift the bearing boxes 31 accordingly. p

The movement of the rolls toward the mandrel in their final adjustment into contact with the stock, or their removal therefrom to admit of the positioning of a new length of stock, is efiected through handle 46, and the consequent movement of the arms an inward movement thereoftending to bring the links 29, 30 into alinement and an outward movement serving to throw outer end, and is supportedadjacent thereto by a spider frame 47 secured to the forward fixed frame member 18. Said spider frame is provided with a neck 48 which forms the support for a fixed guide or die 49, the outer end of which is formed with a spirally-inclined face 50 starting from the inner end of a shoulder 51. Rolls 10- are adj ustably and removably secured upon their shafts and each is provided with a 'rolling face 52, which bears directly upon the stock and forces the same against the mandrel, and likewise an upstanding flange 53, which takes against the forward face of the stock- The rolls, as will be noted, are arranged in a stepped relation to each other, and lie close to the spirally-inclined face 50 of the fixed die 49, or in other words, the rolls lie ina spiral path which conforms to thespiral face 50 of the die 49.

The stock to be coiled is'designated by 54 and passes to the rolls and mandrel through 'a troughhaped guide 55, adjust'ably secured to the fixed frame member 18 by a screw 56. At one side ofthe 'machine, in line with said trough, there is mounted a combined guide and clamping member com prising a housing 57, in the upper 'wall'of which there is mounted a clamping pin 5 8, adapted to be moved into clamping rela tion with the stock through the mediu'm'of a cam 59. A block 60, adapted tofthe size of the stock being operated upomwi'llbe placed in the lower portion of the housing,' as

shown. I I

In use the stock 54 will. be "passed through the clamp, through the guide, and beneath the adjacent roll, the rolls at such time being retracted, as in Figs. 3 and 4, until the end of the stock ext-ends slightly beyond the mandrel; it is then bent or curved] downwardly around the mandrel until it as umes;

the form shown in Fig. 11, after which the rolls will be moved. inwardly intocontact with the stock. This initial bending maybe effectedin, any desired manner; inf fact, the

stock may be so bent before it isfpositioned.

To facilitate this operation and to enable the stock to be so bent that it is unnecessary to cut ofi' the end of the formed c'oil owing to improper formation which, of course, is a wastage, I preferably .employ a manuallyoperated device for accurately and quickly forming the initial bend.

Upon the forward end of the table there is mounted a sliding carriage 61, operable through a handled bell-crank lever 62 and a connecting link 63. A post or standard 64.

extends upwardly from the carriage, in the upper bifurcated end of which is mounted a collar 65 through which and the standard there extends a sleeve 66. Said sleeve and collar are secured together by a set-screw 67, and thesleeve forms a support for a shaft 68 which may be moved endwise therein. The shaft at its inner end carries a head 69, having a recess 70 therein, into which the mandrel may pass. see Figs. 8 and 9, the head having a hook 71, adapted to engage the stock and coil the same around the mandrel as the shaft and head are rotated. Such rotation is effected through the agency ofa crank 72 and in order to effect an endwise movement of the shaft as it is rotated, a cam 73 is secured to the shaft 68, said cam taking against a stud 74. carried by the post or standard.

In the use of this device the stock is first positioned over the mandrel, as in Fig. 8, and the locking pin 58 is forced downwardly to hold the stock; then upon rotation of the head 69 by the crank 72 the hook engages the stock and wipes it around the mandrel, cam 7 3 gradually retracting the head so as to give the bend a spiral twist, as in Fig. 11. hen this is effected and the hook has ridden off the end of the stock theshaft 68 and the allied parts are drawn outwardly away from the mandrel and the carriage is moved to the left, the clamp released and the rolls moved inwardly, through the manipulation of handle 46, into contact with the stock. The operation is then entirely automatic, the mandrel rotating clockwise, while the forming rolls rotate in the opposite direction. Where stock of different sizes is used,

an adjustment of the blocks 27 may be readily effected through the operation of handle 38, moving said blocks inwardly or outwardly, as required, nuts 26* being tightened after such adjustment, after which the rolls may be manipulated through the medium of handle 46, to give that relatively slight movement which is necessary to effect adjustment whena new length of stock is positioned.

As will be readily appreciated, the machine may be so adjusted as to accommodate and operate upon stock of various sizes; so too, the diameter of the coil may be changed "by substituting mandrels of different sizes,

and again, the spread or distance between the various convolutions may be determined and produced by substituting a die -19 having a different pitch toits spirally-disposed face, and adjusting the position of the rolls to correspond thereto.

Having thus described my invention, what I claim is:

1. In a coiling machine, the combination of a rotatable mandrel; a fixed die surrounding the same and having a spirally-inclined face; a plurality of forming rolls located in a spiral stepped relation with reference to said face; means for positively driving said rolls; means for effecting an initial adjustment of said rolls toward the ma'ndrel; and

means for moving said rolls into and out of operative relation with the die and mandrel.

2. In a coiling machine. the combination of a rotatable mandrel; a fixed die surrounding the same and having a spirally-inclined working face; a plurality of shafts spaced about said mandrel; a roll carried by each shaft and adapted to coiiperate with the die and mandrel; a plurality of pairs of fulcrum blocks, one pair for each shaft; means for adjusting said blocks simultaneously toward and from the mandrel; bearing boxes for each shaft; connections between said boxes and blocks; means for simultaneously adjusting said connections, whereby the shafts, and consequently the rolls, may be adjusted with reference to the mandrel and die; and means for driving the shafts, and

"consequently the rolls carried thereby,

3. In a coiling. machine, the combination of a rotatable mandrel; a fixed die surtaneously adjusting said blocks toward and from the mandrel; a pair of supporting boxes for each shaft; a link connection between the boxes and their respective fulcrum blocks; and a cam mechanism for simultaneously adjusting said link connections.

4. In a coiling machine, the combination of a rotatable shaft; a chuck carried thereby; a mandrel secured in said chuck; a fixed frame; a spider secured thereto and forming a support for the mandrel adjacent its outer end; a spirally-faced die carried by the spider and surrounding the mandrel, the end of the mandrel projecting beyond said face; a plurality of shafts arranged around the mandrel; a forming rollcarried by each shaft, the rolls standing in a stepped relation to each other and having their working faces lying close to the spiral face of the die; a pair of-boxes for each shaft; a fulcrum block for .each box, said blocks being arranged in pairs and movable in radiallydisposed ways in the fixed frame; a cam mechanism for slmultaneously ad usting said blocks toward or from the mandrel; an

adjustable link connection between each nism for effecting an initial, simultaneous In testimony whereof I afiix my signature adjustment of the rolls with referfenizle to th; in presence of two witnesses. mandrel according to the size 0 t e stoc to be coiled, whereby the rolls may be quickly CYRUS LOUTREL' 5 adjusted and likewise readily retracted from Witnesses:

and returned to their adjusted position with CHARLOTTE J ACOBI, reference to the mandrel. GERTRUDE BEAVERS. 

